GB1183604A - Improvements in or relating to Digital Position Measuring Devices - Google Patents

Improvements in or relating to Digital Position Measuring Devices

Info

Publication number
GB1183604A
GB1183604A GB06768/67A GB1676867A GB1183604A GB 1183604 A GB1183604 A GB 1183604A GB 06768/67 A GB06768/67 A GB 06768/67A GB 1676867 A GB1676867 A GB 1676867A GB 1183604 A GB1183604 A GB 1183604A
Authority
GB
United Kingdom
Prior art keywords
counter
contents
selector switches
movable member
moved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB06768/67A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Olivetti SpA
Original Assignee
Olivetti SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Olivetti SpA filed Critical Olivetti SpA
Publication of GB1183604A publication Critical patent/GB1183604A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/14—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage
    • G01D5/20—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature
    • G01D5/204—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils
    • G01D5/2073—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing the magnitude of a current or voltage by varying inductance, e.g. by a movable armature by influencing the mutual induction between two or more coils by movement of a single coil with respect to two or more coils
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/24404—Interpolation using high frequency signals
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/20—Control of position or direction using feedback using a digital comparing device
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03M—CODING; DECODING; CODE CONVERSION IN GENERAL
    • H03M1/00—Analogue/digital conversion; Digital/analogue conversion
    • H03M1/06—Continuously compensating for, or preventing, undesired influence of physical parameters
    • H03M1/0602—Continuously compensating for, or preventing, undesired influence of physical parameters of deviations from the desired transfer characteristic

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Theoretical Computer Science (AREA)
  • Length Measuring Devices With Unspecified Measuring Means (AREA)
  • Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
  • Transmission And Conversion Of Sensor Element Output (AREA)

Abstract

1,183,604. Measuring position. ING. C. OLIVETTI & CO. S.p.A. 12 April, 1967 [12 April, 1967], No. 16768/67. Heading G4H. The digital position measuring device of Specification 1,120,413 for measuring the displacement of a movable member with respect to a fixed member, which includes a first counter 10 (Fig. 2) the contents of which are converted into analogue form and continuously compared with the analogue position of the movable member B to supply an error signal to control the application of counting pulses to the first counter 10, and a second counter 42, adapted to receive the pulses applied to the first counter, is modified in that display means V are connected to the second counter 42 to allow the position of the movable member to be displayed in digital form. The counter 10 measures the displacement of the member relative to two graduations on a fixed scale (i.e. it is effecting a fine approximation). In one embodiment (Fig. 2) selector switches RR, 47, 48, RA are first set to their position RE in which the counters 10 and 42 are zeroized. They are then moved to the next position so that the counters are supplied with pulses until the count in the counter 10 represents the position of the member B. The counter 10 will count forwards or backwards depending on which scale graduation the movable member B is nearer. If required however the counter 42 may count forwards when the counter 10 is decremented, a negative sign being set up in the counter 42. When the selector switches are moved to their next position ID the contents of the counter 42 may be modified e.g. by introducing a member representing the total number of scale graduations passed by the member B and the selector switches are then moved to their lowest position NO when the loop of a servo system is re-closed and the digital position measuring device operates normally. In a second embodiment (Fig. 3, not shown) the apparatus is adapted to transfer the contents of counter 10 to counter 42 when the selector switches are in one position and to transfer the contents back into counter 10 in their next position.
GB06768/67A 1966-04-12 1967-04-12 Improvements in or relating to Digital Position Measuring Devices Expired GB1183604A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT914766 1966-04-12

Publications (1)

Publication Number Publication Date
GB1183604A true GB1183604A (en) 1970-03-11

Family

ID=11127970

Family Applications (1)

Application Number Title Priority Date Filing Date
GB06768/67A Expired GB1183604A (en) 1966-04-12 1967-04-12 Improvements in or relating to Digital Position Measuring Devices

Country Status (3)

Country Link
US (1) US3537102A (en)
CH (1) CH461116A (en)
GB (1) GB1183604A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967009A (en) * 1973-09-13 1976-06-29 Mccorquodale Colour Display Limited Method for applying liquid to a substrate
FR2400184A1 (en) * 1977-08-12 1979-03-09 Rieder Heinz DIGITAL POSITION MEASUREMENT DEVICE
FR2435027A1 (en) * 1978-09-01 1980-03-28 Illinois Tool Works FUNCTIONAL PARTS CONTROL MACHINE
US4941267A (en) * 1989-07-31 1990-07-17 Miller Jr Ronald J Electronic measuring device and method for obtaining an actual measurement between points shown on a scaled drawing

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609320A (en) * 1969-03-24 1971-09-28 Inductosyn Corp Position-measuring system
FR2056580A6 (en) * 1969-08-06 1971-05-14 Bergwerksverband Gmbh
US3676652A (en) * 1970-02-18 1972-07-11 Intertek Controls Inc Electronic linear measuring device
GB1348072A (en) * 1971-08-26 1974-03-13 Rosemount Eng Co Ltd Analogue to digital converters
US3851329A (en) * 1972-11-03 1974-11-26 Kraus Instr Inc Digital angle converter
US3767902A (en) * 1972-12-12 1973-10-23 Essex International Inc Engine member position predictor
US3860920A (en) * 1973-06-20 1975-01-14 Inductosyn Corp Position-indicating system
US4041285A (en) * 1976-04-12 1977-08-09 Pentron Industries, Inc. Bi-directional motion sensing and clocking system
DE2729697A1 (en) * 1977-07-01 1979-01-04 Heidenhain Gmbh Dr Johannes METHOD OF INTERPOLATION
FR2413631A1 (en) * 1977-12-30 1979-07-27 Sablons Fond Atel DEVICE FOR DIVIDING A SEGMENT OF VARIABLE LENGTH INTO EQUAL PARTS

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2836356A (en) * 1952-02-21 1958-05-27 Hughes Aircraft Co Analog-to-digital converter
US2873439A (en) * 1954-07-06 1959-02-10 Cons Electrodynamics Corp Digital to analog converting apparatus
US2943237A (en) * 1956-02-27 1960-06-28 Bell & Howell Co Multi-electrode tube circuit
US3007637A (en) * 1960-03-22 1961-11-07 Sperry Rand Corp Coarse-fine counter
US3234544A (en) * 1960-06-10 1966-02-08 Control Data Corp Bi-polar analog-to-digital converter
US3319054A (en) * 1962-11-21 1967-05-09 Gen Electric Data conversion systems
US3261012A (en) * 1963-03-22 1966-07-12 Westinghouse Electric Corp Analog to digital conversion system
GB1047048A (en) * 1964-05-08 1966-11-02 Ferranti Ltd Improvements relating to apparatus for counting electrical pulses
US3315253A (en) * 1964-06-25 1967-04-18 Inductosyn Corp Analog-digital converter
US3350708A (en) * 1964-08-21 1967-10-31 Servo Corp Of America Digital code converter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3967009A (en) * 1973-09-13 1976-06-29 Mccorquodale Colour Display Limited Method for applying liquid to a substrate
FR2400184A1 (en) * 1977-08-12 1979-03-09 Rieder Heinz DIGITAL POSITION MEASUREMENT DEVICE
FR2435027A1 (en) * 1978-09-01 1980-03-28 Illinois Tool Works FUNCTIONAL PARTS CONTROL MACHINE
US4941267A (en) * 1989-07-31 1990-07-17 Miller Jr Ronald J Electronic measuring device and method for obtaining an actual measurement between points shown on a scaled drawing

Also Published As

Publication number Publication date
US3537102A (en) 1970-10-27
CH461116A (en) 1968-08-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE Patent expired